Thanks to everyone who made a donation during our annual appeal! To see the list of donors, or make a donation, see the OEIS Foundation home page.
Table of n, a(n) for n=1..51.
Select[Range, DigitCount[#, 12, 1]==DigitCount[#, 12, 2]>0&] (* Harvey P. Dale, May 19 2019 *)
Sequence in context: A164398 A174519 A079505 * A199405 A256573 A030786
Adjacent sequences: A039601 A039602 A039603 * A039605 A039606 A039607